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TURBULENT SKIN-FRICTION AND HEAT-TRANSFER COEFFICIENTS FOR AN INCLINED FLAT PLATE AT HIGH HYPERSONIC SPEEDS IN TERMS OF FREE-STREAM FLOW PROPERTIES
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C
IN ORDER TO PROVIDE SIMPLE yet reliable design calculations, the turbulent skin-friction and heat-transfer coefficients are presented in terms of the free-stream flow properties. Eckerts turbulent reference-enthalpy theory of skin friction and heat transfer is used for the calculations. These computations are compared with the Deissler and Loeffler analysis revised to include the equilibrium dissociation effects in the boundary layer. A heat-transfer coefficient based on the free-stream kinetic energy is introduced as a design simplification. The skin-friction and heat-transfer coefficients are calculated for a flat plate at angles of attack ranging from 0 to 50 degrees with equilibrium dissociation of air behind the shock wave and within the boundary layer. These coefficients are tabulated for the following range of conditions wall temperature, 1000 to 3000 R freestream velocity, 10,000 to 28,000 fps and altitude, 50,000 to 300,000 feet. Author